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VEGF Concentrations Levels in Bovine Ovulatory Follicles after Prostaglandin Treatment

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Academic year: 2021

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VEGF Concentrations Levels in Bovine Ovulatory Follicles after Prostaglandin Treatment  Comin Antonella , Maiero Stefano , Furlan Valentina , Renaville Robert and Prandi Alberto   

Abstract:  The   aim   of   this   study   was   to   evaluate   variations   in   the   bovine   follicular   VEGF  concentrations 72 hours after a double prostaglandin synchronisation treatment The experiment was  performed on 17 multiparous Italian Friesian dairy cows which were at least 90 days post­calving.  The follicular fluid was collected from the dominant follicles under ultrasound guidance. The ratio  between the progesterone and estrogen follicular fluid concentrations were used to allow into active  and nonactive estrogen follicles. The average VEGF follicular concentrations were significantly  different   (P<0.05)   between   the   two   groups.   Moreover,   the   follicular   NEFA   levels   increased  significantly   (P<0.01)   in   the   nonestrogen   active   group,   while   its   IGF­I   concentrations   were  significantly lower (P<0.05). Our data suggest that follicular VEGF and NEFA, as well as IGF­I,  may play a key role in bovine follicle growth and could be valuable biochemical markers of oocyte  maturation.

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